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One-dimensional solar radiative transfer: Perturbation approach and its application to independent-pixel calculations for realistic cloud fields

Jerg, Matthias und Trautmann, Thomas (2007) One-dimensional solar radiative transfer: Perturbation approach and its application to independent-pixel calculations for realistic cloud fields. Journal of Quantitative Spectroscopy and Radiative Transfer, 105 (1), Seiten 32-54. Elsevier. DOI: 10.1016/j.jqsrt.2006.09.014.

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Offizielle URL: http://dx.doi.org/10.1016/S0022-4073(07)00109-4

Kurzfassung

The radiative transfer perturbation theory (RTPT), which has already been introduced in atmospheric radiative transfer several years ago, is applied to cloud related problems. The RTPT requires the solution of the radiative transfer equation in the forward and the adjoint mode. The basic principles of this technique are presented as well as its extensions to isotropic surface reflection and its conjunction with the Hermite interpolation. This set of methods is applied to different atmospheric conditions including realistic cloud scenes. The results are compared with the usual (forward) independent pixel calculations with respect to errors of individual pixels and domain-averaged values. The RTPT turns out to be sufficiently accurate in the case the clouds’ internal vertical variations remain moderate. It is also shown that, depending on the specific radiative transfer problem, the RTPT can offer some advantages on computational speed. However, the limitations of the RTPT with regard to realistic clouds are addressed as well.

Dokumentart:Zeitschriftenbeitrag
Titel:One-dimensional solar radiative transfer: Perturbation approach and its application to independent-pixel calculations for realistic cloud fields
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Jerg, MatthiasInstitute for Meteorology, University of Leipzig
Trautmann, ThomasNICHT SPEZIFIZIERT
Datum:2007
Erschienen in:Journal of Quantitative Spectroscopy and Radiative Transfer
Band:105
DOI :10.1016/j.jqsrt.2006.09.014
Seitenbereich:Seiten 32-54
Verlag:Elsevier
Status:veröffentlicht
Stichwörter:Radiative transfer; Perturbation theory; Independent-pixel; Clouds; DISORT
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Entwicklung von Atmosphärenprozessoren (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Methodik der Fernerkundung > Atmosphärenprozessoren
Hinterlegt von: Prof.Dr. Thomas Trautmann
Hinterlegt am:11 Jul 2007
Letzte Änderung:12 Dez 2013 20:24

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